<form role="form" name="searchForm">
    <div class="form-group">
        <label for="productTitle" class="label-control">商品名称：</label>
        <input id="productTitle" type="text" class="form-control" placeholder="商品名称">
    </div>
    <div class="form-group">
        <label for="productPrice" class="control-label">
          商品价格 :
      </label>
        <input id="productPrice" type="number" class="form-control" placeholder="商品价格">
    </div>
    <div class="form-group">
        <label for="productCategory" class="control-label">
          商品类别 :
      </label>
        <select id="productCategory" class="form-control">
      </select>
    </div>
    <div class="form-group">
        <label for="productTitle" class="control-label">
          商品名称 :
      </label>
        <input type="submit" class="btn btn-primary btn-block" value="搜索">
    </div>
</form>